Lamp-socket member.



M. GUETT.

LAMP SOCKET MEMBER.

APPLICATION FILED SEPT-26.1916.

1,258,559 I Patented Mar. 5, 1918.

NESSES: INVENTOR. W Monroe GueZK' By .fl/Z

M ATTORNEY.

UNITED STATES PATENT OFFICE.

MONROE GUETT, OF HARTFORD, CONNECTICUT, ASSIGNOB TO THE HART 8a HEGEMAN MANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LAMP-SOCKET MEMBER.

Application filed September 26, 1916.

To all whom it may concern:

Be it known that I, MONROE Gun'rr, a citizen of the United States, and a resident of Hartford, in the county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Lamp- Socket Members, of which thefollowing is a specification.

The invention has for its object the pro duction of a novel form of socket member to take the base of an incandescent lamp. The ordinarily lamp socket, as that term is commonly used, comprises in the complete structure a screw threaded shell into which the lamp base is screwed and which is connected to one side of the circuit and a stationary contact point, usually located centrally of the end of the socket, with which the contact at the center of the lamp base engages. The socket member forming the subject matter of this invention takes the place of the screw threaded shell ordinarily used. It may be connected up in circuit in any well known manner and may be supported in place in any desired way and either held against motion, or otherwise supported, as for instance in my co-pending application S. No. 160,065.

In the drawings- Figure 1 is a front view of the device forming the subject matter of my invention.

Fig. 2 is an edge view thereof looking from the side of Fig. 1.

Fig. 3 i an edge view looking from the top of Fig. 1. 7

Fig. 4 shows the manner of use in con nection with an incandescent lamp bulb.

Referring to the drawings it will be found that the device forming the subject matter of this invention, and which is generally indicated by A, consists of a s irally formed single convolution of stock, 0 proper thickness to engage and move in the thread of the complementary member. At the points where the stock is axially displaced to give it a spiral formation, as at a, b, there Specification of Letters Patent.

Patented Mar. 5, 1918.

Serial No. 122,309.

is an integral connecting portion 0, notched on its inner edge as at cl. As will be clearly seen in the drawings, this notch is in the connecting portion 0, which is angularly disposed with relation to the general plane of the structure, forming a means for starting the member onto the screw base of a lamp. The pitch of the spiral will of course correspond closely to the pitch of the thread of the base.

The structure is of general annular form, the wall of which is narrow for the most part but is substantially increased in width at the point where the stock is axially displaced to produce the spiral formation, the notch 03 being formed in the axially displaced portion in order to permit of entering the threads of the lamp base into this socket member. This provides a very compact structure, adapted for use Where any present form of lamp socket cannot be used, and thus making it possible to utilize screw base lamps where it has not been heretofore possible to use them.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

I claim as my invention:

A lamp socket member formed in the shape of a solid annulus from sheet metal, the Wall of which is at one point increased in width and axially displaced to produce a spiral formation of the annulus, and a notch in the inner edge of the axially displaced portion of the wall.

MONROE GUETT.

Witnesses:

A. J. BENNE'I'I, H. B. Pannmnnn. 

